http://lesliefranke.com/files/reference/csscheatsheet.html

http://www.smashingmagazine.com/2007/01/19/53-css-techniques-you-couldnt-live-without/

a lot of pointers - http://www.alvit.de/handbook/index.php

http://blog.themeforest.net/general/15-css-tricks-that-must-be-learned/